How do you call a subroutine in another program in SAP ABAP?
Step 2: Create another program ZSAPN_SUBROUTINE_REUSE2 and call perform external program ZSAPN_SUBROUTINE_REUSE1. The syntax for calling external subroutine is: PERFORM () TABLES USING CHANGING .
How do you call a function module in ABAP program?
To call a function module, use the CALL FUNCTIONstatement: CALL FUNCTION module [EXPORTING f 1 = a 1 f n = a n ] [IMPORTING f 1 = a 1 f n = a n ] [CHANGING f 1 = a 1 …
Can subroutine be nested in ABAP?
Subroutines are procedures that we define in an ABAP program and can be called from any program. Subroutines cannot be nested and are usually defined at the end of the program. A subroutine can be defined using FORM and ENDFORM statements.
Can a subroutine of one program be called in another program SAP?
One program can call another program as a subroutine. Subroutines are useful when a program needs to repeat the same group of commands at several different places.
What is the use of perform in SAP ABAP?
In ABAP programming PERFORM statement is used for calling a subroutine ( Piece of reusable functional code defined with FORM statement ). We can call the subroutine defined in the current executing program or from an external program. A subroutine will be enclosed in a FORM and ENDFORM statements.
How do you call a function in SAP ABAP?
Calls or registers a function module. Static and dynamic function module calls have no differences in their syntax. The function module is always specified by a data object and the name of the called function module not determined until runtime. The system field sy-subrc is set to 0 when a function module is called.
What are modularization techniques?
Modularization is a technique used to divide the application program into smaller units to maintain easily and reduce the code redundancy. The identical logic coded in many places (either in the same program or in multiple programs) called as a redundandant code.
What are the advantages of modularization in ABAP?
Advantages of Modularization in ABAP
- Improves the readability and maintainability of ABAP programs.
- Prevents redundancies.
- Incorporates reusability of functions.
- Encapsulation of data.